<form id="vvj9l"><th id="vvj9l"><progress id="vvj9l"></progress></th></form><form id="vvj9l"></form><address id="vvj9l"><address id="vvj9l"><listing id="vvj9l"></listing></address></address>
<noframes id="vvj9l">

<form id="vvj9l"></form>
<form id="vvj9l"><span id="vvj9l"><th id="vvj9l"></th></span></form>
<noframes id="vvj9l"><address id="vvj9l"></address>

           

          流體管材質、流體管執行標準、流體管用途

          信息編輯:無縫鋼管廠http://www.petberrysupply.com
           

            流體管材質、流體管執行標準、流體管用途

            流體管

            鋼管材質:20、q345

            鋼管執行標準:gb/t8163-1999

            鋼管用途:流體輸送

           
           
           
          又粗又大又硬又黄